In Helvetica, the 3, 6 and 9 are nearly closed, and are much too similar to the 8. With any kind of stress in the viewing conditions (small size, low light, vision impairment, distant viewing, sunlight glare...) this makes them unnecessarily hard to distinguish.

This used to drive me nuts on the iPhone. I jailbroke my phone just to be able to change the font, at one point. Too much trouble to keep it up, though. I would change the font again in a heartbeat if I could; even though San Francisco isn't nearly as bad, it could be much better.

Hmm, so tons of bugs and missing features posts daily on the Fontlab 6 forum, and it jumps straight from alpha to retail release?

Yes, lots of bugs have been reported, and lots of bugs that get fixed. Just to give you some idea, in the past month we have averaged 30+ bug fixes per week. So if you think you see a fair number of bugs reported in the forum, well, sure. But there have been a ton of things fixed as well.

Not saying the app is perfect, just that using the number of bug reports prior to ship as a measure of how buggy the app is *now* may be misleading, in the absence of other data.